{
  "port": 6247,
  "protocol": "tcp",
  "service": "Unassigned",
  "oneLiner": "Unassigned by IANA — sits in the 6245-6250 gap next to JEOL's instrument ports.",
  "whatItIs": "The registry shows 6245-6250 as unassigned. Its only notable neighbours are 6241-6244, registered to JEOL for their Network Services data transport and discovery protocols used by scientific instruments. Nothing is documented as using 6247 itself. A listener here is an application that picked a free high port, so identify it by process rather than by port number.",
  "exposure": {
    "verdict": "careful",
    "note": "An unregistered, unidentified listener gets no verdict until you know what it is; do not expose it externally in the meantime."
  },
  "checkCommand": "sudo lsof -nP -iTCP:6247 -sTCP:LISTEN",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry — 6245-6250 unassigned",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=6247",
      "kind": "iana"
    }
  ]
}